[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20070717175017.8b8a8976.akpm@linux-foundation.org>
Date: Tue, 17 Jul 2007 17:50:17 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: David Howells <dhowells@...hat.com>
Cc: torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] AFS: Fix file locking
On Tue, 17 Jul 2007 13:47:32 +0100
David Howells <dhowells@...hat.com> wrote:
> + if (type == AFS_LOCK_READ &&
> + vnode->flags & (1 << AFS_VNODE_READLOCKED)) {
Here we use
vnode->flags & (1 << foo)
> + set_bit(AFS_VNODE_LOCKING, &vnode->flags);
and elsewhere we use set_bit(foo, &vnode->flags) and clear_bit()
This is a bit strange. Does the open-coded bit-test have any performance
benefit on any architecture? Not on x86 at least, afaik.
Please consider converting all that stuff to test_bit() sometime. It sure
would look a lot better.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists